A:
Positive:
1 x 25467826119 x 1340411929 x 8782009151 x 1686611551 x 4622112869 x 887693061 x 832014379 x 58159
Negative:
-1 x -254678261-19 x -13404119-29 x -8782009-151 x -1686611-551 x -462211-2869 x -88769-3061 x -83201-4379 x -58159
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 254,678,261, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 254,678,261 | |
| -1 | -254,678,261 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 254,678,261.
Example:
1 x 254,678,261 = 254,678,261
and
-1 x -254,678,261 = 254,678,261
Notice both answers equal 254,678,261
With that explanation out of the way, let's continue. Next, we take the number 254,678,261 and divide it by 2:
254,678,261 ÷ 2 = 127,339,130.5
If the quotient is a whole number, then 2 and 127,339,130.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 254,678,261 | |
| -1 | -254,678,261 |
Now, we try dividing 254,678,261 by 3:
254,678,261 ÷ 3 = 84,892,753.6667
If the quotient is a whole number, then 3 and 84,892,753.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 254,678,261 | |
| -1 | -254,678,261 |
Let's try dividing by 4:
254,678,261 ÷ 4 = 63,669,565.25
If the quotient is a whole number, then 4 and 63,669,565.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 254,678,261 | |
| -1 | 254,678,261 |
If you did it right, you will end up with this table:
| 1 | 19 | 29 | 151 | 551 | 2,869 | 3,061 | 4,379 | 58,159 | 83,201 | 88,769 | 462,211 | 1,686,611 | 8,782,009 | 13,404,119 | 254,678,261 |
| -1 | -19 | -29 | -151 | -551 | -2,869 | -3,061 | -4,379 | -58,159 | -83,201 | -88,769 | -462,211 | -1,686,611 | -8,782,009 | -13,404,119 | -254,678,261 |
Here are some more numbers to try:
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